It's a decent tool, but as Greg mentioned, I'd definitely plan for a worst case scenario and make sure it cash flows at the highest interest rate juuuust in case. 

I have a great planning tool that could help you with planning your acquisition strategy for the next 10 years you might find helpful.  

This may come into play as you near the end of life and need to think about estate planning.4. 

However, if the 401k has business income, it will be subject to UBIT.An IRA is not subject to capital gain taxes because it is a tax-deferred retirement plan.

Quote from @Brian King: Quote from @Jaycee Greene: Quote from @Brian King: Quote from @Jaycee Greene: OK, so how do you plan to fund these fix/flips?

That means paying all cash isn’t an option unless you plan to bring another $600k to the table. . 

Plenty of people do have 10-20 unit and work thru it, you just need to think it thru and have a plan if you don't want to do all the work. 

Quote from @Kris Kempe: Hey BP fam, Have a single family home I got under contract and planned on wholesaling.

Could you do a cash out refinance of that property and rent it as well, or are you planning on selling? 

The 2-3% points in extra cost are worth it if you plan on using as I described above because the use would be for a few  months at most and due to that short term use you can survive a rate adjustment up.But, if you have no plan to payoff the debt like when using for a down payment on a long term hold why pay the extra cost for flexibility and have the additional risk of the adjustable rate with the amortization looming when you can get a fixed rate second mortgage.